[PATCH 03/84] mm-once

[Chris Wilson]

---
 drivers/gpu/drm/drm_mm.c | 9 +++++++--
 include/drm/drm_mm.h     | 4 ++++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_mm.c b/drivers/gpu/drm/drm_mm.c
index a29e3fe44e88..8c1a8a98d2ec 100644
--- a/drivers/gpu/drm/drm_mm.c
+++ b/drivers/gpu/drm/drm_mm.c
@@ -492,6 +492,7 @@ int drm_mm_insert_node_in_range(struct drm_mm * const mm,
 {
 	struct drm_mm_node *hole;
 	u64 remainder_mask;
+	bool once;
 
 	DRM_MM_BUG_ON(range_start >= range_end);
 
@@ -504,9 +505,13 @@ int drm_mm_insert_node_in_range(struct drm_mm * const mm,
 	if (alignment <= 1)
 		alignment = 0;
 
+	once = mode & DRM_MM_INSERT_END;
+	mode &= ~DRM_MM_INSERT_END;
+
 	remainder_mask = is_power_of_2(alignment) ? alignment - 1 : 0;
-	for (hole = first_hole(mm, range_start, range_end, size, mode); hole;
-	     hole = next_hole(mm, hole, mode)) {
+	for (hole = first_hole(mm, range_start, range_end, size, mode);
+	     hole;
+	     hole = once ? NULL : next_hole(mm, hole, mode)) {
 		u64 hole_start = __drm_mm_hole_node_start(hole);
 		u64 hole_end = hole_start + hole->hole_size;
 		u64 adj_start, adj_end;
diff --git a/include/drm/drm_mm.h b/include/drm/drm_mm.h
index e3aa3bfd4860..2a6351093d15 100644
--- a/include/drm/drm_mm.h
+++ b/include/drm/drm_mm.h
@@ -109,6 +109,10 @@ enum drm_mm_insert_mode {
 	 * Allocates the node from the bottom of the found hole.
 	 */
 	DRM_MM_INSERT_EVICT,
+
+	DRM_MM_INSERT_END = BIT(31),
+	DRM_MM_INSERT_HIGHEST = DRM_MM_INSERT_HIGH | DRM_MM_INSERT_END,
+	DRM_MM_INSERT_LOWEST = DRM_MM_INSERT_LOW | DRM_MM_INSERT_END,
 };
 
 /**
-- 
2.17.0